Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly
Reexamination Certificate
2005-11-17
2008-12-23
Ferguson, Keith T (Department: 2618)
Electric lamp or space discharge component or device manufacturi
Process
With assembly or disassembly
C455S039000, C455S550100, C455S567000, C455S412100, C455S412200
Reexamination Certificate
active
07467982
ABSTRACT:
A system and method for converting a note-based audio object to a Pulse Code Modulated (PCM) audio format is disclosed. An electronic communication device includes a memory containing a note-based audio object and lookup table containing trigonometric function evaluations. The note-based audio object contains note frequency information. The note-based audio object is converted to a PCM stream by generating PCM code words for each sample point in the PCM stream based upon the note frequency information. The PCM code words are determined based upon selection of one or more of the trigonometric function evaluations within the look-up table. A speaker outputs audio based upon the PCM formatted stream.
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http:/http://groups.google.ca/group/comp.graphics.algorithms/browse—thread/thread/7067e0b7d7c04c16/f246ed656fbab5d0?q=sine+lookup+table+fpu&rnum=1&hl=en#f246ed656fbab5d0 sine lookup table fpu, Aug. 16, 2005.
http:/http://www.ringtonecreator.info/doc-gui/01-intro.html note convert pcm, Aug. 16, 2005.
Ferguson Keith T
Research in Motion Limited
Ridout & Maybee LLP
LandOfFree
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